from time import perf_counter
from random import random
DARTS = 1000*1000
hits = 0.0
start = perf_counter()
for i in range(1,DARTS+1):
    x,y = random(),random()
    dist = pow(x**2+y**2,0.5)
    if dist <=1.0:
        hits = hits + 1
    pi = 4*(hits/DARTS)
print("圆周率的值为：{}".format(pi))
print("运行时间为：{:.3f}秒".format(perf_counter()-start))